Screen



(No Modem R. H. KRALL.

SCREEN.

No. 426,595. Patented Apr. 29, 1890..

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UNITED STATES PATENT OFFICE.

RICHARD Il. KRALL, OF ALLENTOVN, PENNSYLVANIA.

SCREEN.

SPECIFICATION forming part of Letters Patent No. 426,595, dated April 29, 1890.. Application filed August 2, 1889. Serial No. 319,524. (No model.)

To all whom t may con/cern,.-

.Be it known that I, RICHARD Il. KRALL, a citizen of the United States, residing at Allentown, in the county of Lehigh, State of Pennsylvania, have invented certain new and useful Improvements in Screens, of which the following is a specification, reference being had therein to the accompanying drawings.

This invention has relation to an improvement in extensible screens, the main obj ect of theinvention being to provide a screen adjustable in any direction by means of cornerpieces constructed and .operating in a novel manner, as hereinafter described.

Other objects and advantages of the invention will appear in the following description, and the novel features thereof will be particularly point-ed out in the claim.

Referring to the drawings, Figure l is a front elevation of a screen constructed in accordance with my invention, showing the manner of extending the saine, and having portions broken away to show the interior construction. Fig. 2 is a longitudinal crosssection on the line a; :n of Fig. l 5 and Fig. 3 is an elevation of the upper stile, looking against the inner edge of the saine.

Like letters of reference indicate like parts in all the figures of the drawings.

The drawings are intended to represent a door constructed in accordance with my invention, but will apply equally as well to a window-screen. The stiles A and the end pieces B are formed with the deep kerfs a, in which the wire-cloth F is adapted to fit and in which it may be adjusted to vary the size of the screen. The cross-piece or inullion C has the shoulders c and c. The wire-cloth is adapted to rest upon the shoulders c, and is fastened to the cross-piece, preferably, by means of screws passing through the fastening-strips D, which rest upon. the wire and upon the shoulders c. The ends of the cross- `pieces are adapted to iit loosely in the mortises E of the stiles A, said inortises being cut either entirely oronly partly through the stiles. The tenons of the cross-piece which enter the inortises in the stiles are secured in any desired position by means of the binding-screws C passing through the stiles and in to the tenons.

Then the screen is adjusted to the proper size of the door or window it is intended to fit, the wire may be fastened firmly in place, if desired, by means ofthe fastening-strips A', having shoulders similar to those of the strips D and Afitting into shoulders of the stiles and end pieces similar to those of the cross-piece or inullion C. The corner-pieces Gr have their working sides curved to play in the recesses G', (see Fig. 3,) whose sides are correspondingly curved. The ends of the stiles and end pieces have the screw-holes 7e, through which the screws or other fastening devices 7e are adapted to pass and through the wire and stile to fasten the wire irmly in place when the screen has been adjusted to Vthe proper height and width. Vhen the stiles and end pieces are pushed out, the corner-pieces G are also pressed out, so that the corners of the frame will always be substantially square and present a neat appearance.

I-Iaving thus described my invention, what I claiin isf- A screen comprising the stiles A, the end pieces B, having the kerfs c and recesses G', the adjustable corner-pieces in said recesses for adjusting the stiles and end pieces at right angles to each other, the cross-piece or inullion C, the rabbeted fastening-strips A at one side and end of the wire-cloth, ex tending over said kerfs a, the wire-cloth F, the strips D, securing the wire-cloth to the mullion, and the securing devices, as the screws 7c', engaging the stiles and end pieces and cornerpieces outside the fastening-strips for holding the parts in their adj usted positions, substantially as shown and described.

In testimony whereof I affix my signature in presence of two witnesses.

RICHARD Il. KRALL.

Witnesses:

Louis SCHAEEER, (2. J. EAs'rMANa 

